103856861 has 2 divisors, whose sum is σ = 103856862. Its totient is φ = 103856860.

The previous prime is 103856807. The next prime is 103856867. The reversal of 103856861 is 168658301.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 92256025 + 11600836 = 9605^2 + 3406^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-103856861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (103856867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51928430 + 51928431.

It is an arithmetic number, because the mean of its divisors is an integer number (51928431).

Almost surely, 2^103856861 is an apocalyptic number.

It is an amenable number.

103856861 is a deficient number, since it is larger than the sum of its proper divisors (1).

103856861 is an equidigital number, since it uses as much as digits as its factorization.

103856861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 103856861 is about 10191.0186438844. The cubic root of 103856861 is about 470.0510899645.

The spelling of 103856861 in words is "one hundred three million, eight hundred fifty-six thousand, eight hundred sixty-one".